You are the koi! Elegant water paths are full of danger, but also full of glowing collectibles. Stay graceful, dodge every trap, and keep swimming.
Unlike other fishing games, in Big Bonanza Koi you play as the fish. Your orange fish swims automatically to the right while the ocean world scrolls toward you. Your only job is to steer up and down!
Move your mouse up and down over the game (or drag your finger on mobile) to guide the koi smoothly through each opening. Use Arrow Up/Down or W/S on keyboard.
Hooks and nets drop into the lane, while coral hazards rise from below. The space between them gets tighter as distance increases.
Collect koi bubbles, pearl petals, and lotus stars to build a refined score streak. Consistent clean runs earn the best totals.
Use power-ups at the right moment: Shield for safety, Speed Boost for extra momentum, and Magnet for easier collectible runs.
Basic fishing hook hanging from a line. Appears at various heights. Easy to spot by the glowing danger aura. Dodge above or below.
A hook with a juicy worm attached. More tempting — don't fall for it! Same dodge mechanic as regular hooks.
Three hooks joined together — wider danger zone. Appears in harder difficulty zones. Requires precise positioning to dodge.
The most dangerous obstacle. A wide fishing net that covers a large vertical span. Look for the gap — or use a Shield to power through!
Grows upward from the seafloor. Static position — just swim above it. Gets more frequent at higher distances.
Same as red coral but slightly smaller. Often appears in pairs with red coral for tighter navigation challenges.